Most people don't use their TV to look at that kind of thing anyways.
>They are just feeding image through an alogrithm [sic]
You don't know that.
>Saving it would incur legal problems like copyright
That's not how copyright works.
>and have storage costs
Negligible.
>Most people don't use their TV to look at that kind of thing anyways.
Irrelevant.
> Data ceases to be personal when it is made anonymous, and an individual is no longer identifiable. But for data to be truly anonymized, the anonymization must be irreversible.
Examples of PII:
A cookie ID. Internet Protocol (IP) address Location data (for example, the location data from a mobile phone). The advertising identifier of your phone.
A tvid is personally identifiable.
https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CEL...
> (30) Natural persons may be associated with *online identifiers provided by their devices*, applications, tools and protocols, such as internet protocol addresses, cookie identifiers or other identifiers such as radio frequency identification tags. This may leave traces which, in particular when combined with unique identifiers and other information received by the servers, may be used to create profiles of the natural persons and identify them.
Device Identifiers explicitly covered as a definition of GDPR. Further, IPs are also shared if you are behind an ipv4 gateway and these are also covered.